Though 10 minutes in the sulfurous sand is recommended, I was profusely sweating within two.

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Second, Venezuela's crude is too heavy and too sulfurous for China's refineries once it gets there.

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However, particulate and sulfurous pollution are easier to reduce than CO2, and they are washed out of the atmosphere relatively quickly.

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Nearby, an industrial chimney belched out a twist of sulfurous-smelling smoke.

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Seeger said he and other lawyers involved in the multi-district litigation have 7, 000 cases teed up, and he figures another 20, 000 homes might have sulfurous wallboard that needs to come out.

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Now the Alvord is just a sulfurous expectoration away.

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But pollution from burning the country's highly sulfurous coal, China's leading source of energy, is most damaging the health of Chinese, the quality of the air they breathe and the water they drink.

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Complicating the issue is the volcanic eruption of Toba, in Sumatra, around 74, 000 years ago, which injected so much sulfurous dust into the high atmosphere that it caused prolonged droughts that might have come close to wiping out many human populations.

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But the ground felt damp and cold under his knees and a whiff of sulfurous air stung his lungs and the cold sun playing on his skin seemed to stir the cigarette burns to pain, and the pain brought home to him that what had happened, and what was about to happen, were no dream.

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